Home / 398,766.69-549,986.90-255,540.06

Finding the Fourth Proportional to 398,766.69, 549,986.90 and 255,540.06

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Solution

The fourth proportional to 398,766.69, 549,986.90 and 255,540.06 is: 352,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,766.69 : 549,986.90 = 255,540.06 : x
  2. Step 2: Convert to fraction form
    398,766.69/549,986.90 = 255,540.06/x
  3. Step 3: Cross multiply
    398,766.69x = 549,986.90 × 255,540.06
  4. Step 4: Simplify right side
    398,766.69x = 140,543,684,147.51
  5. Step 5: Solve for x
    x = 140,543,684,147.51/398,766.69
  6. Step 6: Final answer
    x = 352,445.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.